← Back to Intel
Insider ActivitySPTX
ARCH Venture Partners XII, LLC, Insider at Seaport Therapeutics, Inc., bought $19.8M of SPTX
Updated Jun 15, 2026
ARCH Venture Partners XII, LLC
Insider
Seaport Therapeutics, Inc. ·
$SPTX
Transaction Details
| Insider | ARCH Venture Partners XII, LLC |
|---|---|
| Title | Insider |
| Company | Seaport Therapeutics, Inc. |
| Ticker | SPTX |
| Transaction Type | Purchase |
| Transaction Date | 2026-05-04 |
| Shares Traded | 1,100,000 |
| Price Per Share | $18 |
| Total Value | $19.8M |
| Filed Date | 2026-05-04 |
| Accession Number | 0001193125-26-204458 |
Ownership Context
| Shares Owned After Transaction | 6,294,951 |
|---|---|
| Ownership Type | Indirect |
SEC Filing
Accession: 0001193125-26-204458
Other Insider Trades — SPTX
| Insider | Title | Action | Value | Date |
|---|---|---|---|---|
| Gladstein Lana | General Counsel | traded | — | 2026-05-04 |
| Chen Michael Cunyuan | Chief Scientific Officer | traded | — | 2026-05-04 |
| Chen Michael Cunyuan | Chief Scientific Officer | traded | — | 2026-05-04 |
| PAUL STEVEN M | Insider | traded | — | 2026-05-04 |
| HEALY JAMES | Insider | traded | — | 2026-05-04 |
| HEALY JAMES | Insider | traded | — | 2026-05-04 |
| PAUL STEVEN M | Insider | traded | — | 2026-05-04 |
| HEALY JAMES | Insider | traded | — | 2026-05-04 |
| HEALY JAMES | Insider | traded | — | 2026-05-04 |
| Gladstein Lana | General Counsel | traded | — | 2026-05-04 |
Other Trades by ARCH Venture Partners XII, LLC
| Ticker | Company | Action | Value | Date |
|---|---|---|---|---|
| SPTX | Seaport Therapeutics, Inc. | traded | — | 2026-05-04 |
| SPTX | Seaport Therapeutics, Inc. | traded | — | 2026-05-04 |
Full Ticker Profile
View all insider trades, dark pool activity, congressional filings, and the Whisper Score for SPTX — Seaport Therapeutics, Inc. →
Track SPTX insider activity in real time on The Wire →
Get alerts when ARCH Venture Partners XII, LLC files new trades — Go Pro →
Data sourced from SEC Form 4 insider trading filings. Transaction details are as reported to the Securities and Exchange Commission. This page does not constitute financial advice. StonkWhisper presents public records — it does not verify or guarantee the accuracy of SEC filings.
Last updated: June 15, 2026 at 07:13 UTC